EP4349461A4 - SEPARATION MEMBRANE AND ITS PRODUCTION METHOD - Google Patents

SEPARATION MEMBRANE AND ITS PRODUCTION METHOD

Info

Publication number
EP4349461A4
EP4349461A4 EP22811113.4A EP22811113A EP4349461A4 EP 4349461 A4 EP4349461 A4 EP 4349461A4 EP 22811113 A EP22811113 A EP 22811113A EP 4349461 A4 EP4349461 A4 EP 4349461A4
Authority
EP
European Patent Office
Prior art keywords
production method
separation membrane
membrane
separation
production
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP22811113.4A
Other languages
German (de)
French (fr)
Other versions
EP4349461A1 (en
Inventor
Satoshi Kato
Yoshiki Nishiguchi
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Toray Industries Inc
Original Assignee
Toray Industries Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Toray Industries Inc filed Critical Toray Industries Inc
Publication of EP4349461A1 publication Critical patent/EP4349461A1/en
Publication of EP4349461A4 publication Critical patent/EP4349461A4/en
Pending legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D67/00—Processes specially adapted for manufacturing semi-permeable membranes for separation processes or apparatus
    • B01D67/0002—Organic membrane manufacture
    • B01D67/0009—Organic membrane manufacture by phase separation, sol-gel transition, evaporation or solvent quenching
    • B01D67/0011—Casting solutions therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
    • B01D71/06—Organic material
    • B01D71/30—Polyalkenyl halides
    • B01D71/32—Polyalkenyl halides containing fluorine atoms
    • B01D71/34—Polyvinylidene fluoride
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/15—Use of additives
    • B01D2323/216—Surfactants
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2323/00—Details relating to membrane preparation
    • B01D2323/219—Specific solvent system
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/025—Finger pores
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/0283—Pore size
    • B01D2325/02833—Pore size more than 10 and up to 100 nm
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2325/00—Details relating to properties of membranes
    • B01D2325/02—Details relating to pores or porosity of the membranes
    • B01D2325/0283—Pore size
    • B01D2325/02834—Pore size more than 0.1 and up to 1 µm
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/442—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by nanofiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F1/00—Treatment of water, waste water, or sewage
    • C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
    • C02F1/444—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by ultrafiltration or microfiltration
    • C—CHEMISTRY; METALLURGY
    • C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
    • C02F2303/00—Specific treatment goals
    • C02F2303/20—Prevention of biofouling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Hydrology & Water Resources (AREA)
  • Environmental & Geological Engineering (AREA)
  • Water Supply & Treatment (AREA)
  • Organic Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Separation Using Semi-Permeable Membranes (AREA)
EP22811113.4A 2021-05-27 2022-04-26 SEPARATION MEMBRANE AND ITS PRODUCTION METHOD Pending EP4349461A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2021089042 2021-05-27
PCT/JP2022/018864 WO2022249839A1 (en) 2021-05-27 2022-04-26 Separation membrane and method for producing same

Publications (2)

Publication Number Publication Date
EP4349461A1 EP4349461A1 (en) 2024-04-10
EP4349461A4 true EP4349461A4 (en) 2025-05-28

Family

ID=84228767

Family Applications (1)

Application Number Title Priority Date Filing Date
EP22811113.4A Pending EP4349461A4 (en) 2021-05-27 2022-04-26 SEPARATION MEMBRANE AND ITS PRODUCTION METHOD

Country Status (5)

Country Link
EP (1) EP4349461A4 (en)
JP (1) JPWO2022249839A1 (en)
CN (1) CN117425522A (en)
AU (1) AU2022282948A1 (en)
WO (1) WO2022249839A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN116808851B (en) * 2023-03-08 2024-11-08 杭州师范大学 A hierarchical porous film of polyvinylidene fluoride based on volume exclusion effect and its preparation method and application
WO2025183194A1 (en) * 2024-02-29 2025-09-04 東レ株式会社 Separation membrane and method for producing same

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037836A1 (en) * 1979-10-15 1981-10-21 Asahi Kasei Kogyo Kabushiki Kaisha Polyvinylidene fluoride resin hollow filament microfilter and process for producing same
WO1997026134A1 (en) * 1996-01-22 1997-07-24 Memtec America Corporation Highly porous polyvinylidene difluoride membranes
JPH10316793A (en) * 1997-05-19 1998-12-02 Asahi Chem Ind Co Ltd Porous membrane made of vinylidene fluoride resin
WO2006135966A1 (en) * 2005-06-20 2006-12-28 Siemens Water Technologies Corp. Cross linking treatment of polymer membranes
EP2008706A1 (en) * 2006-04-19 2008-12-31 Asahi Kasei Chemicals Corporation Highly durable porous pvdf film, method of producing the same and washing method and filtration method using the same
WO2013022660A1 (en) * 2011-08-05 2013-02-14 Arkema Inc. Polymer blend membranes

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5127107B2 (en) * 2001-02-16 2013-01-23 東レ株式会社 Manufacturing method of separation membrane
JP4784522B2 (en) * 2006-03-24 2011-10-05 東レ株式会社 Polyvinylidene fluoride based porous separation membrane
JP7409072B2 (en) * 2018-12-26 2024-01-09 東レ株式会社 Porous membrane, composite membrane, and porous membrane manufacturing method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0037836A1 (en) * 1979-10-15 1981-10-21 Asahi Kasei Kogyo Kabushiki Kaisha Polyvinylidene fluoride resin hollow filament microfilter and process for producing same
WO1997026134A1 (en) * 1996-01-22 1997-07-24 Memtec America Corporation Highly porous polyvinylidene difluoride membranes
JPH10316793A (en) * 1997-05-19 1998-12-02 Asahi Chem Ind Co Ltd Porous membrane made of vinylidene fluoride resin
WO2006135966A1 (en) * 2005-06-20 2006-12-28 Siemens Water Technologies Corp. Cross linking treatment of polymer membranes
EP2008706A1 (en) * 2006-04-19 2008-12-31 Asahi Kasei Chemicals Corporation Highly durable porous pvdf film, method of producing the same and washing method and filtration method using the same
WO2013022660A1 (en) * 2011-08-05 2013-02-14 Arkema Inc. Polymer blend membranes

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
MERTENS MATTHIAS ET AL: "Crosslinked PVDF-membranes for solvent resistant nanofiltration", JOURNAL OF MEMBRANE SCIENCE, vol. 566, 1 November 2018 (2018-11-01), pages 223 - 230, XP055972113, ISSN: 0376-7388, DOI: 10.1016/j.memsci.2018.08.051 *
See also references of WO2022249839A1 *

Also Published As

Publication number Publication date
WO2022249839A1 (en) 2022-12-01
JPWO2022249839A1 (en) 2022-12-01
AU2022282948A1 (en) 2023-11-09
EP4349461A1 (en) 2024-04-10
CN117425522A (en) 2024-01-19

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